Fibre-optic endoscopes have been around since the mid 1970s. So technology that is much older than the muon scanning techniques that the ScanPyramids project used to discover the North Face Corridor. The real problem, I think, was that Hawass went on record to reject the ScanPyramids results for reasons known only to Zahi Hawass, despite widespread scientific acceptance of the ScanPyramids papers.